On Monday, I explained my methodology for ranking every wide receiver in football history, and yesterday, I presented a list of the best single seasons of all time. Today the career list of the top 150 wide receivers. As usual, I implemented a 100/95/90 formula, giving a player credit for 100% of his production in his best season, 95% of his value in his second-best season, 90% in his third year, and so on. The table below is fully sortable and lists the first and last year each person played wide receiver1; you can use the search feature to find the best receiver to ever play for each team (for example, typing ‘ram’ for the Rams ‘clt’ for the Colts.)[click to continue…]

Note that I have excluded seasons where a wide receiver played running back or tight end. This is generally not a big deal, but does hurt someone like Lenny Moore. [↩]

Yesterday, I explained my methodology for ranking every wide receiver in football history. Today I’m going to present a list of single-season leaders, which presents some problems.

I think the method I described yesterday does a good job adjusting for era, as receivers are only given credit for their yards above the baseline, which is different each season. But there are some other complicating factors unique to football. Seasons have had varying lengths: a receiver who plays 12 games in a 12-game season can’t be penalized the way you would penalize a receiver who only plays in 12 games now. Since older receivers are generally at a disadvantage for many reasons, I decided to simply pro-rate the value for all non-16 game seasons as if it was a 16-game season. However, I have also included downward adjustments for players in other leagues and during World War II.1

The fine print: For players in 1943, 1944, and 1945, and for players in the AAFC, I only gave the receivers credit for 60% of the value they created. For the AFL, I gave players 60% of their value in 1960 and 1961, 70% in 1962, 80% in 1963, 90% in 1964, and 100% in 1965 through 1969. In case it wasn’t obvious, all of these adjustments are arbitrary. [↩]

Regular readers know that one of my projects this off-season is to come up with a better way to grade wide receivers. I first attempted to rank every wide receiver four years ago. That study, which I will reproduce this week, has some positives and negatives. My goal is to eventually come up with four or five different ranking systems, so consider the series this week to be the first of several ranking systems to come.

The first step in this system is to combine the three main stats — receptions, receiving yards and receiving touchdowns — into one stat: Adjusted Catch Yards. We know that a passing touchdown is worth about 20 yards, so I’m crediting a receiver with 20 yards for every touchdown reception. Next, we need to decide on an appropriate bonus for each reception.

We want to give receivers credit for receptions because, all else being equal, a receiver with more receptions is providing more value because he’s likely generating more first downs. I looked at all receivers over a 12-year period who picked up at least 30 receiving first downs. I then used the number of receptions and receiving yards those players had as inputs, and performed a regression to estimate how many first downs should be expected. The best-fit formula was:[click to continue…]